New York could soon be the first major American city to limit its number of ride-hailing vehicles. Under a measure that could go to a vote as soon as Aug. 8, the city would stop licensing new for-hire vehicles ? except wheelchair-accessible ones ? while the council took a year to study the industry. It might also set minimum hourly pay for app-based drivers. Uber, which argues that the cap would hurt riders poorly served by yellow taxis and public transport, has already released an ad against the proposal.